10 OPTIONS AND PERIPHERAL EQUIPMENT
10.5 Noise reduction techniques
99
10
■
Radio noise filter (FR-BIF(-H))
This filter is effective in suppressing noise radiated from the power supply side of the converter unit, especially in 10 MHz and
lower radio frequency bands. The FR-BIF(-H) is designed for the input only.
200 V class: FR-BIF
400 V class: FR-BIF-H
■
Varistor for input power supply (recommended)
Varistors are effective to prevent exogenous noise and lightning surges from entering the converter unit. When using a
varistor, connect it between each phase of the input power supply of the equipment. For varistors, the TND20V-431K,
TND20V-471K, and TND20V-102K manufactured by Nippon Chemi-Con are recommended. For detailed specification and
usage of the varistors, refer to the manufacturer catalog.
[Unit: mm]
*1 For special purpose items for lead length (L), contact the manufacturer.
Connection diagram
Dimensions [Unit: mm]
Make the connection cables as short as possible. Grounding is required.
When using the FR-BIF(-H) with a single-phase power supply, insulate
unconnected lead wires.
Power
supply
voltage
Varistor
Maximum rating
Maximum
limit voltage
Static
capacity
(reference
value)
Varistor voltage
rating (range)
V1 mA
Permissible
circuit voltage
Surge
current
immunity
Energy
immunity
Rated
pulse
power
[A]
[V]
AC
[Vrms]
DC [V] 8/20
μ
s [A]
2 ms [J]
[W]
[pF]
[V]
200 V
TND20V-431K
275
350
10000/1 time
7000/2 times
195
1.0
100
710
1300
430 (387 to 473)
TND20V-471K
300
385
215
775
1200
470 (423 to 517)
400 V
TND20V-102K
625
825
7500/1 time
6500/2 times
400
1.0
100
1650
560
1000 (900 to 1100)
Model
D Max.
H Max.
T Max.
E ±1.0
L Min.
φ
d ±0.05
W ±1.0
TND20V-431K
21.5
24.5
6.4
3.3
20
0.8
10.0
TND20V-471K
6.6
3.5
TND20V-102K
22.5
25.5
9.5
6.4
20
0.8
10.0
MC
MCCB
L3
L2
L1
Terminal block
Power
supply
Radio noise
filter
Converter unit
42
29
44
7
4
58
29
Leakage current: 4 mA
Red White Blue
Green
Approx. 300
φ
5 hole
W
E
H
D
L
T
φ
d